A Review of Operation Planning and Distribution Network Optimization of AADC Network

AlAhmad, Omar; AlDahmi, Maha

doi:10.1109/icpea51500.2021.9417765

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Besides, it's important to highlight that there is a history of tripping due to parallel operation that occurred last year -the ring is added to the selected sample as ring9 -due to huge flow with almost 660 A at one feeder head and 470 A at the other end. Accordingly, the high load flow caused tripping on overcurrent protection where all actual load flow measurements are collected through AADC real-time Distribution Management System (DMS) system powered by Spectrum Power 4.4 [4]. Typical current ratings of 11 kV cables in the ring varies from 285 to 340 A depending upon the sizes 240-300 sq.mm Copper.…”

Section: Load Flow Analysismentioning

confidence: 99%

See 1 more Smart Citation

Parallel Operation for 11 kV Ring System with Normally Open Point at Distribution Networks in AADC

AlAhmad,

AlDahmi,

Rayees

2024

J. Phys.: Conf. Ser.

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Currently, Al Ain Distribution Company (AADC) 11 kV distribution circuits are electrically split by Normal Open Points (NOP)s. NOPs can be closed for load restoration in case of planned or unplanned outages. Also, changing the NOP locations helps in load shifting to achieve network optimization between adjacently located 33/11 kV primary substations. This paper discusses a new operation mode in medium voltage distribution power network of AADC at Al Ain area in the United Arab Emirates by introducing closed loops of parallel 11 kV feeders from different busbars or substations. This operation mode is intended to end the continuous debate of optimal NOP locations in addition to expected reduction in the required time for load restoration in case of failures at distribution (11/0.4 kV) substations. A detailed case study is performed to explore the achieved benefits and enhancements on load balancing, voltage profile, and power factor in medium voltage networks. On the other hand, the impact on load flow, protection scheme, and loading violation are evaluated. Furthermore, the proposed model is in line with the regulations of the Department of Energy (DoE), regulatory body in Abu Dhabi Emirate, and should fully comply with Electricity Distribution Code (EDC) of Security of Supply Standards. Accordingly, while the current used operation mode is still valid, it is found that closed loops arrangement can be only allowed for rings from same 33/11 kV substations feeding from same source with considerable protection limitations. Moreover, it was concluded that closed loops from different 33/11 kV Substations will result in load flow problems.

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Section: Load Flow Analysismentioning

confidence: 99%

“…-The NOP is preferred to at telemetered station (with remotely switching capabilities from centralized distribution management system) as far as possible, and have easy access by field operation staff (like: near to the roads, not inside private premises, ..etc.) [4].…”

Section: Introductionmentioning

confidence: 99%